I installed Ubuntu 18.04.1 on my workstation last week. The ctrl keys did not work initially until I google'd the reason and found a link that stated to download gnome-tweak-tools, and then modify some setting. This made it so that the ctrl keys worked. But for the past few days, the ctrl keys have stopped working again.

I can't even do ctrl+c in terminal. When I type this, it just types the letter c.

Does anyone know how to fix this problem?

2 Answers 2


my left ctrl key not work but right ctrl key is ok.

when I enter settings->device->keyborad ,then reset all shortcut-key. the left ctrl key is ok.

  • Worked for me, too... Strange. Although in my case CTRL did work in some cases (e.g. CTRL+C) but not others (e.g. CTRL+Shift+T)
    – nspo
    Commented Nov 27, 2018 at 19:56
  • This worked for me too. Thanks! I can now Ctrl+C and Ctrl+V to my heart's content.
    – brianestey
    Commented Mar 13, 2019 at 3:48

I solved it in Language settings → Manage installed languages → Keyboard input method system: None. If IBus is set, CTRL+ V and CTRL + C do not work

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